Cleaning brush



FIG. 1 is a top, front, left side perspective view of a cleaning brush showing my new design;

FIG. 2 is a top, rear, left side perspective view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view thereof.

The broken lines featuring the word ‘KUNGS,’ which is a registered trademark of Sinituote Oy Corporation Finland, in FIGS. 1, 2, and 6 form no part of the claimed design. The broken lines shown on the bottom of the head in FIG. 5 and within the handle in FIG. 7 illustrate portions of the cleaning brush that form no part of the claimed design. 

CLAIM The ornamental design for a cleaning brush, as shown and described. 